On Sat, May 10, 2008 at 09:59:09AM +0200, Sven Joachim wrote:

> The filesystem has to be written to after the inodes are freed, i.e.
> the offending process that kept them open has exited. You would end
> up with inodes that have a link count of 0, i.e. lost space on the
> device, if the system would not do that.

Turns out you're right on the money:

http://lists.debian.org/debian-devel...ads.html#00212
http://www.debian.org/doc/manuals/se...to/ch4.en.html

so I decided to go with this:

Dpkg::Pre-Invoke {
"/bin/mount -o remount,rw /usr";
"/bin/mount -o remount,rw /boot";
"/bin/mount -o remount,exec /tmp";
};
Dpkg::Post-Invoke {
"/bin/mount -o remount,ro /usr || echo 'Warning: /usr is busy: try killing X'";
"/bin/mount -o remount,ro /boot";
"/bin/mount -o remount,noexec /tmp";
};

At least now it attempts to remount ro, and gives a sensible error if it
can't without causing apt to stop processing.

--
"Oh, look: rocks!"
-- Doctor Who, "Destiny of the Daleks"


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

On Sun, May 11, 2008 at 11:03:26AM -0700, Todd A. Jacobs wrote:
> On Sat, May 10, 2008 at 07:36:34PM -0400, Douglas A. Tutty wrote:
>
> > When you mount the filesystem, are all the standard options active or
> > do you mount it noatime? I don't know if it matters.
>
> I'm mounting it with relatime. Mount says:
>
> /usr type xfs (rw,relatime,barrier,logbufs=8)
>
> I'm not sure why that should matter, though.
>
> > What happens if you do the remounting pre/post manually instead?
>
> $ sudo mount -o remount,ro /usr
> mount: /usr is busy
>
> Since I can't do it manually, I'm not surprised it can't be done by apt,
> but some of the questions people are asking make me wonder if it's an
> interaction between XFS and apt, or if it's a problem with ext3 as well.
> I have no way to test it; maybe someone else can chime in on that.
>
> > I used to have /usr and /boot mounted ro routinely in Sarge with no
> > problem.
>
> Me, too, which is why this is annoying me tremendously.

I just su - , and ran:

# mount -o,ro,remount /usr

then ran

# mount

and saw that /usr was mounted ro, then ran

# mount -o,rw,remount /usr

and had it remounted rw, no problem.

Doug.


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

On Sun, May 11, 2008 at 08:53:06PM -0400, Douglas A. Tutty wrote:
> On Sun, May 11, 2008 at 11:03:26AM -0700, Todd A. Jacobs wrote:
> > On Sat, May 10, 2008 at 07:36:34PM -0400, Douglas A. Tutty wrote:
> >
> > > When you mount the filesystem, are all the standard options active or
> > > do you mount it noatime? I don't know if it matters.
> >
> > I'm mounting it with relatime. Mount says:
> >
> > /usr type xfs (rw,relatime,barrier,logbufs=8)
> >
[snip]

seeing as the original question was about running apt (aptitude), why
not set up an alias for apt or aptitude like so

TMP=/var/tmp aptitude

or find some other sutable location which has exec or rw access'

I realise this doesn't help with remounting /usr or /... as rw
>
> Doug.
>
>
> --
> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
>
>

--
"We're working with Chancellor Schröder on what's called 10-plus-10-over-10: $10 billion from the U.S.,$10 billion from other members of the G7 overa 10-year period, to help Russia securitize the dismantling -- the dismantled nuclear warheads."

- George W. Bush
05/23/2002
Berlin, Germany

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFIJ7e2kZz88chpJ2MRAgp9AJ0SH+INyaARBHN54wniwx +9y4BIfwCg8Sef
04QwxSzW/QNyGqallpFTMBI=
=fNY1
-----END PGP SIGNATURE-----

On Sun, May 11, 2008 at 08:53:06PM -0400, Douglas A. Tutty wrote:

> and had it remounted rw, no problem.

Right. It only locks when unlinked files are in use do to a running
application during an upgrade. This is mostly a userland problem, I
think, since most daemons are restarted by their installation scripts
during upgrades.

--
"Oh, look: rocks!"
-- Doctor Who, "Destiny of the Daleks"


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org